exporting fixes

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -109,8 +109,9 @@ public class AppController implements Initializable {
                     exportWallet.setDisable(true);
                     showTxHex.setDisable(false);
                 } else if(tabData.getType() == TabData.TabType.WALLET) {
+                    WalletTabData walletTabData = (WalletTabData)tabData;
                     EventManager.get().post(new WalletTabSelectedEvent(selectedTab));
-                    exportWallet.setDisable(false);
+                    exportWallet.setDisable(walletTabData.getWallet() == null || !walletTabData.getWallet().isValid());
                     showTxHex.setDisable(true);
                 }
             }
@@ -511,6 +512,11 @@ public class AppController implements Initializable {
         }
     }
 
+    @Subscribe
+    public void walletChanged(WalletChangedEvent event) {
+        exportWallet.setDisable(!event.getWallet().isValid());
+    }
+
     @Subscribe
     public void timedWorker(TimedEvent event) {
         if(event.getTimeMills() == 0) {

src/main/java/com/sparrowwallet/sparrow/control/FileWalletExportPane.java

@@ -62,19 +62,7 @@ public class FileWalletExportPane extends TitledDescriptionPane {
                 decryptWalletService.setOnSucceeded(workerStateEvent -> {
                     EventManager.get().post(new StorageEvent(file, TimedEvent.Action.END, "Done"));
                     Wallet decryptedWallet = decryptWalletService.getValue();
-                    try {
-                        OutputStream outputStream = new FileOutputStream(file);
-                        exporter.exportWallet(decryptedWallet, outputStream);
-                        EventManager.get().post(new WalletExportEvent(decryptedWallet));
-                    } catch(Exception e) {
-                        String errorMessage = e.getMessage();
-                        if(e.getCause() != null && e.getCause().getMessage() != null && !e.getCause().getMessage().isEmpty()) {
-                            errorMessage = e.getCause().getMessage();
-                        }
-                        setError("Export Error", errorMessage);
-                    } finally {
-                        decryptedWallet.clearPrivate();
-                    }
+                    exportWallet(file, decryptedWallet);
                 });
                 decryptWalletService.setOnFailed(workerStateEvent -> {
                     EventManager.get().post(new StorageEvent(file, TimedEvent.Action.END, "Failed"));
@@ -83,6 +71,24 @@ public class FileWalletExportPane extends TitledDescriptionPane {
                 EventManager.get().post(new StorageEvent(file, TimedEvent.Action.START, "Decrypting wallet..."));
                 decryptWalletService.start();
             }
+        } else {
+            exportWallet(file, copy);
+        }
+    }
+
+    private void exportWallet(File file, Wallet decryptedWallet) {
+        try {
+            OutputStream outputStream = new FileOutputStream(file);
+            exporter.exportWallet(decryptedWallet, outputStream);
+            EventManager.get().post(new WalletExportEvent(decryptedWallet));
+        } catch(Exception e) {
+            String errorMessage = e.getMessage();
+            if(e.getCause() != null && e.getCause().getMessage() != null && !e.getCause().getMessage().isEmpty()) {
+                errorMessage = e.getCause().getMessage();
+            }
+            setError("Export Error", errorMessage);
+        } finally {
+            decryptedWallet.clearPrivate();
         }
     }
 }

src/main/java/com/sparrowwallet/sparrow/control/WalletNameDialog.java

@@ -43,7 +43,7 @@ public class WalletNameDialog extends Dialog<String> {
         Platform.runLater( () -> {
             validationSupport.registerValidator(name, Validator.combine(
                     Validator.createEmptyValidator("Wallet name is required"),
-                    (Control c, String newValue) -> ValidationResult.fromErrorIf( c, "Wallet name is not unique", Storage.getWalletFile(newValue).exists())
+                    (Control c, String newValue) -> ValidationResult.fromErrorIf( c, "Wallet name is not unique", Storage.walletExists(newValue))
             ));
             validationSupport.setValidationDecorator(new StyleClassValidationDecoration());
         });

src/main/java/com/sparrowwallet/sparrow/io/Storage.java

@@ -206,6 +206,13 @@ public class Storage {
         return "BIE1".getBytes(StandardCharsets.UTF_8);
     }
 
+    public static boolean walletExists(String walletName) {
+        File encrypted = new File(getWalletsDir(), walletName);
+        File unencrypted = new File(getWalletsDir(), walletName + ".json");
+
+        return (encrypted.exists() || unencrypted.exists());
+    }
+
     public static File getWalletFile(String walletName) {
         //TODO: Check for existing file
         return new File(getWalletsDir(), walletName);

src/main/resources/com/sparrowwallet/sparrow/app.fxml

@@ -21,8 +21,10 @@
                                 <MenuItem text="Examples" onAction="#openExamples"/>
                             </items>
                         </Menu>
+                        <SeparatorMenuItem />
                         <MenuItem mnemonicParsing="false" text="Import Wallet..." onAction="#importWallet"/>
                         <MenuItem fx:id="exportWallet" mnemonicParsing="false" text="Export Wallet..." onAction="#exportWallet"/>
+                        <SeparatorMenuItem />
                         <MenuItem mnemonicParsing="false" text="Close" onAction="#closeTab"/>
                     </items>
                 </Menu>